The present invention discloses a Web data collection method based on Docker, a Web data collection Web server based on Docker and a Web data collection system based on Docker. The Web data collection method is completed in a Web server, and comprises: a mirror container is created based on a Docker, and a data collection main node and a plurality of data collection work nodes are constructed through adoption of the mirror container; the data collection main node and the data collection work nodes are mutually communicated; the data collection main node receives a Web data collection task and starts the data collection work nodes with a preset number according to the number of the URL in the Web data collection task; the Web data collection task includes data source IP addresses and the URLs; after the data collection work nodes are started, the data collection main node distributes the data source IP addresses and the URLs to each data collection work node; the data collection work nodes collect corresponding Web data; and the data collection main node receives data transmitted by each data collection work node and recover all the data collection work nodes to complete the collection of the Web data.